php - 将 JavaScript 函数转换为 PHP 函数

Question

我想将这段 JavaScript(可以正常工作)转换为 PHP 函数，这样所有这些代码就不必出现在网页的源代码中。

<script type="text/javascript">

    var images = [],
    index = 0;

    images[0] = "<a href = 'http://www.random_target1.com' target='_blank'><img src='//www.random_target1.com/random_banner.jpg' width='120' /></a>";

    images[1] = "<a href = 'http://www.random_target2.com' target='_blank'><img src='//www.random_target2.com/random_banner.jpg' width='120' /></a>";

    images[2] = "<a href = 'http://www.random_target3.com' target='_blank'><img src='//www.random_target3.com/random_banner.jpg' width='120' /></a>";

    index = Math.floor(Math.random() * images.length);
    document.write(images[index]);

</script>

我在 PHP 文件中尝试了这个 PHP 函数，并认为我可以从 HTML 文件中调用它的结果，因此只有确定的值才会出现在 HTML 源代码中。不过，这段代码破坏了页面。

public function getRandom()
{
    $images = array();
    $index = 0;

    $images[0] = "<a href = 'http://www.random_target1.com' target='_blank'><img src='//www.random_target1.com/random_banner.jpg' width='120' /></a>";

    $images[1] = "<a href = 'http://www.random_target2.com' target='_blank'><img src='//www.random_target2.com/random_banner.jpg' width='120' /></a>";

    $images[2] = "<a href = 'http://www.random_target3.com' target='_blank'><img src='//www.random_target3.com/random_banner.jpg' width='120' /></a>";

    $index = Math.floor(Math.random() * $images.length);
    return $images[$index];
}   

Answer 1

$images = array(
"<a href = 'http://www.random_target1.com' target='_blank'><img src='//www.random_target1.com/random_banner.jpg' width='120' /></a>",
 "<a href = 'http://www.random_target1.com' target='_blank'><img src='//www.random_target1.com/random_banner.jpg' width='120' /></a>",
 "<a href = 'http://www.random_target1.com' target='_blank'><img src='//www.random_target1.com/random_banner.jpg' width='120' /></a>"
);
$index = rand(0, count($images)-1);

echo $images[$index];